public Set<GroupConversionDescriptor> asDescriptors() {
Set<GroupConversionDescriptor> descriptors = newHashSet( groupConversions.size() );
for ( Entry<Class<?>, Class<?>> conversion : groupConversions.entrySet() ) {
descriptors.add(
new GroupConversionDescriptorImpl(
conversion.getKey(),
conversion.getValue()
)
);
}